Maths-
General
Easy

Question

If m is the slope of tangent to the curve e to the power of y end exponent equals 1 plus x to the power of 2 end exponent then

  1. vertical line m vertical line greater than 1    
  2. m greater than 1    
  3. m greater than negative 1    
  4. vertical line m vertical line less or equal than 1    

The correct answer is: vertical line m vertical line less or equal than 1


    table row cell e to the power of y end exponent equals 1 plus x to the power of 2 end exponent rightwards double arrow e to the power of y end exponent fraction numerator d y over denominator d x end fraction equals 2 x rightwards double arrow fraction numerator d y over denominator d x end fraction equals fraction numerator 2 x over denominator 1 plus x to the power of 2 end exponent end fraction equals m end cell row cell vertical line m vertical line equals fraction numerator 2 open vertical bar x close vertical bar over denominator 1 plus open vertical bar x to the power of 2 end exponent close vertical bar end fraction rightwards double arrow vertical line m vertical line less or equal than 1 text end text text a end text text s end text text end text 2 vertical line x vertical line less or equal than 1 plus vertical line x vertical line to the power of 2 end exponent end cell end table

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